A Markov chain Monte Carlo (MCMC) method and a bootstrap method were compared in the estimation of standard errors of item response theory (IRT) true score equating. Three test form relationships were examined: parallel, tau-equivalent, and congeneric. Data were simulated based on Reading Comprehension and Vocabulary tests of the Iowa Tests of…

The Iowa Tests of Basic Skills (ITBS), here summarized for administrators, are intended to provide information about the skills development of individual students and about relative strengths and weaknesses of the instructional program. The ITBS represents the first comprehensive elementary school and secondary school statewide testing program in…

The records of graduates of Iowa high schools who entered the University of Iowa as freshmen in the fall of 1977 were secured in cooperation with the Iowa Testing Program. Test scores for grades 4, 6, and 8 on the Iowa Tests of Basic Skills and for grade 11 on the Iowa Tests of Educational Development were obtained for all students whose scores…

Test results are presented from the 11th year of the Arizona Pupil Achievement Testing Program, administered as mandated by the state legislature, which requires that a nationally standardized norm-referenced achievement test in reading, grammar, and mathematics be given to students in grades 2 through 11, with representative samples tested in…

Test results are presented for the Arizona Pupil Achievement Testing Program for fall 1991. In the 1991-92 school year, the state legislature mandated that only grades 4, 7, and 11 be tested. Although school districts could elect to test other grades, results in this report represent only tests for grades 4, 7, and 11 on either the Iowa Tests of…